Hi, I am using Kafka 0.7.1, and using SyncProducer and SimpleConsumer with a single broker service process.
I am occasionally seeing messages (from a *single* partition) being processed out of order to what I expect and I am trying to find where the problem lies. The problem may well be in my code - I just would like to eliminate Kafka as a potential cause. Messages are being sent sequentially from the producer process, using a single SyncProducer. Does Kafka provide any guarantees for message ordering in this case? eg. If The sync producer sends messages A then B then C, does the Kafka broker guarantee that messages will be persisted with the order A,B,C? If not, is there any way to ensure this ordering? Has anything changed in 0.8 that could be used to ensure that ordering? Thanks, Ross
